MCP1402T-E/OT vs LTC7003EMSE#TRPBF: Component Comparison for Power Electronics Designers
Quick verdict
For low-side MOSFET or IGBT gate drive where compact SOT-23 packaging and high peak current (500mA) are priorities, the MCP1402T-E/OT is the clear choice due to its fast switching times and wide supply voltage range. Conversely, for high-side N-channel MOSFET gate drive requiring bootstrap operation up to 60V and a thermally enhanced package, the LTC7003EMSE#TRPBF is the better fit despite slower rise/fall times and a narrower supply range.
Spec comparison table
| Spec | MCP1402T-E/OT | LTC7003EMSE#TRPBF | Notes |
|---|---|---|---|
| Channel type | Single | Single | Equal, both single-channel drivers. |
| Current peak output source/sink | 500mA / 500mA | Not specified | MCP1402T-E/OT explicitly supports high peak current, beneficial for fast switching. |
| Digikey programmable | Not Verified | Not Verified | No known programmability for either. |
| Driven configuration | Low-Side | High-Side | Different target use; cannot substitute without circuit redesign. |
| Gate type | IGBT, MOSFET (N-Channel, P-Channel) | MOSFET (N-Channel) | MCP1402T supports both MOSFET and IGBT; LTC7003 limited to N-Channel MOSFETs. |
| Input type | Non-Inverting | Non-Inverting | Equal. |
| Logic voltage V_IL, V_IH | 0.8V, 2.4V | Not specified | MCP1402T-E/OT provides logic threshold info, aiding interface design. |
| Mounting type | Surface Mount | Surface Mount | Equal. |
| Number of drivers | 1 | 1 | Equal. |
| Operating temperature range | -40°C ~ 150°C (TJ) | -40°C ~ 125°C (TJ) | MCP1402T-E/OT supports higher max TJ, advantageous for harsh thermal environments. |
| Package case | SC-74A, SOT-753 (SOT-23-5) | 16-TFSOP (3.00mm width) Exposed Pad | MCP1402T-E/OT is smaller footprint; LTC7003 has exposed pad for better thermal dissipation. |
| Rise/Fall time (typical) | 19ns / 15ns | 90ns / 40ns | MCP1402T-E/OT switches significantly faster, reducing switching losses and EMI. |
| Supply voltage range | 4.5V ~ 18V | 3.5V ~ 15V | MCP1402T-E/OT has wider input voltage range, allowing more flexible supply options. |
| High-side voltage max bootstrap | N/A | 60V | LTC7003 supports high-side gate drive up to 60V bootstrap voltage, enabling high-voltage applications. |
Design trade-offs
The MCP1402T-E/OT targets low-side drive applications with a small SOT-23 package and strong 500mA peak drive current capability. Its fast rise and fall times (19ns and 15ns typical) allow reduced switching losses and tighter timing control, which is critical in high-frequency switching power supplies. The wide supply voltage range (4.5V to 18V) also provides flexibility when choosing gate drive voltage rails. Its support for both IGBTs and MOSFETs broadens application scope. The compact package is advantageous for dense layouts but limits thermal dissipation, so thermal derating may be required at high switching frequencies or currents.
In contrast, the LTC7003EMSE#TRPBF is designed for high-side N-channel MOSFET gate drive in bootstrap topologies, with a maximum bootstrap voltage of 60V. This allows operation in higher voltage domains where the gate voltage must be driven above the source voltage, critical for synchronous buck converters or half-bridge configurations. The 16-MSOP package with exposed pad improves thermal performance, which is important since high-side drivers often experience elevated junction temperatures. However, the LTC7003’s slower rise and fall times (90ns and 40ns typical) can increase switching losses and potentially EMI, particularly at higher switching frequencies. The supply voltage range (3.5V to 15V) is narrower than MCP1402T-E/OT, limiting some supply options.
From a layout perspective, the MCP1402T-E/OT’s SOT-23-5 package is easier to fit in tight spaces but provides fewer pins, limiting features such as diagnostics or enable pins. LTC7003’s larger 16-pin MSOP package offers more pins potentially for additional functionality (not covered here), but consumes more board area and requires careful thermal pad layout for heat sinking. The lack of explicit drive current data for LTC7003 makes it difficult to directly compare switching speed benefits; however, the slower rise/fall times indicate a trade-off for the higher voltage rating and thermal robustness.
Cost at volume will typically favor the MCP1402T-E/OT due to its simpler packaging and widespread use in low-side drive roles. LTC7003’s specialized high-side capability and more complex package generally come at a higher unit price, justified only in designs requiring bootstrapped high-side drive.
Use-case fit
Choose MCP1402T-E/OT when…
- You need a compact, low-side driver for N-channel MOSFET or IGBT in DC-DC converters with fast switching frequency (e.g., 500kHz+).
- The supply voltage rail varies up to 18V, requiring a wide operating voltage range.
- Your design requires high peak gate current (500mA) to rapidly charge/discharge gate capacitance and minimize switching losses.
- Space is at a premium, and a small SOT-23 footprint is preferred.
- Operating temperature can exceed 125°C junction temperature, up to 150°C.
Choose LTC7003EMSE#TRPBF when…
- You need a high-side driver for bootstrapped N-channel MOSFETs operating up to 60V bootstrap voltage, typical in synchronous buck or half-bridge topologies.
- Thermal management is critical, and you can leverage the exposed pad on the 16-MSOP package for heat sinking.
- Your supply voltage is between 3.5V and 15V, compatible with the LTC7003’s range.
- Gate drive switching speed is less critical than high-side voltage capability and robust thermal design.
- Your design includes high-voltage rails or requires non-inverting logic input for high-side gate signal control.
Drop-in compatibility
These two parts are not pin-compatible or footprint-compatible. MCP1402T-E/OT uses a 5-pin SOT-23 package targeting low-side gate drive, while LTC7003EMSE#TRPBF uses a larger 16-MSOP package with an exposed pad, intended for high-side bootstrap operation. Substituting one for the other requires circuit topology changes (low-side vs high-side), PCB redesign for the different package, and likely different supply and control signal arrangements. No direct drop-in replacement is possible based on the provided data.
Alternatives to consider
- IR2110 (International Rectifier / Infineon): High-side/low-side driver with bootstrap capability for high-voltage MOSFET/IGBT applications; widely used in half-bridge configurations.
- TC4420 (Microchip Technology): High peak current (1.5A) low-side MOSFET driver in an 8-pin package, suitable for applications needing even faster switching than MCP1402T.
- UCC37322 (Texas Instruments): Dual high-speed MOSFET driver with 4A peak current, supporting both high and low side configurations; useful for full-bridge or synchronous buck converters needing strong drive.